package com.juc.unsafe;

import java.util.List;
import java.util.UUID;
import java.util.Vector;

/**
 * 解决方案；
 * 1、List<String> list = new Vector<>();
 * 2、List<String> list = Collections.synchronizedList(new ArrayList<>());
 * 3、List<String> list = new CopyOnWriteArrayList<>()；
 */
public class ListTest {
    public static void main(String[] args) {
        List<String> list = new Vector<>();
        for (int i = 1; i <= 10; i++) {
            new Thread(() -> {
                list.add(UUID.randomUUID().toString().substring(0, 5));
                System.out.println(list);
            }, String.valueOf(i)).start();
        }
    }
}
